Stock Option Activity (Details) (USD $)	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Summary of stock option activity under equity incentive plan and warrants issued outside the plan
Number of Options or Warrants Balance outstanding, January 1, 2012	3,584,686
Number of Options or Warrants Granted	50,000
Number of Options or Warrants Exercised	0
Number of Options or Warrants Expired (vested)	(79,686)
Number of Options or Warrants Cancelled (unvested)	0
Number of Options or Warrants Balance outstanding, June 30, 2012	3,555,000	3,584,686
Number of Options or Warrants Exercisable, June 30, 2012	3,229,773
Weighted Average Exercise Price, Balance outstanding, January 1, 2012	$ 1.67
Weighted Average Exercise Price Granted	$ 0.74
Weighted Average Exercise Price Exercised	$ 0
Weighted Average Exercise Price Expired (vested)	$ 0.94
Weighted Average Exercise Price Cancelled (unvested)	$ 0
Weighted Average Exercise Price, Balance outstanding, June 30, 2012	$ 1.67	$ 1.67
Weighted Average Exercise Price Exercisable, June 30, 2012	$ 1.76
Weighted Average Remaining Contractual Life (in years) Beginning Balance	3 years 3 months 18 days	3 years 9 months 18 days
Weighted Average Remaining Contractual Life (in years) Granted	7 years
Weighted Average Remaining Contractual Life (in years) Exercised	0 years
Weighted Average Remaining Contractual Life (in years) Expired (vested)	3 years 8 months 12 days
Weighted Average Remaining Contractual Life (in years) Cancelled (unvested)	0 years
Weighted Average Remaining Contractual Life (in years) Ending Balance	3 years 3 months 18 days	3 years 9 months 18 days
Weighted Average Remaining Contractual Life (in years) Exercisable, June 30, 2012	3 years 2 months 12 days